package com.rundatop.core.util;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

public class HttpClientUtil {

    public static String doGet(String url, Map<String, String> param) {
        // 创建Httpclient对象
        CloseableHttpClient httpclient = HttpClients.createDefault();
        String resultString = "";
        CloseableHttpResponse response = null;
        try {
            // 创建uri
            URIBuilder builder = new URIBuilder(url);
            if (param != null) {
                for (String key : param.keySet()) {
                    builder.addParameter(key, param.get(key));
                }
            }
            URI uri = builder.build();

            // 创建http GET请求
            HttpGet httpGet = new HttpGet(uri);

            // 执行请求
            response = httpclient.execute(httpGet);
            // 判断返回状态是否为200
            if (response.getStatusLine().getStatusCode() == 200) {
                resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (response != null) {
                    response.close();
                }
                httpclient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    public static String doGet(String url) {
        return doGet(url, null);
    }

    public static String doPost(String url, Map<String, String> param) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建参数列表
            if (param != null) {
                List<NameValuePair> paramList = new ArrayList<>();
                for (String key : param.keySet()) {
                    paramList.add(new BasicNameValuePair(key, param.get(key)));
                }
                // 模拟表单
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList, "utf-8");
                httpPost.setEntity(entity);
            }
            // 执行http请求
            response = httpClient.execute(httpPost);
            int statusCode = response.getStatusLine().getStatusCode();
			if (statusCode == 401) {
				httpPost.abort();
			}
			else if (statusCode != 200) {
				httpPost.abort();
				throw new RuntimeException("httpClient, error status code: " + statusCode);
			}
			HttpEntity entity = response.getEntity();
			if (entity != null) {
				
				resultString = EntityUtils.toString(entity, "utf-8");
			}
			EntityUtils.consume(entity);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e.getMessage());
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    public static String doPost(String url) {
        return doPost(url, null);
    }

    /**
     * 请求的参数类型为json
     * @param url
     * @param json
     * @return
     * {username:"",pass:""}
     */
    public static String doPostJson(String url, String json) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }
    
    /**
     * 请求的参数类型为json
     * @param url
     * @param json
     * @return
     */
    public static Map<String,Object> doPostJsonIO(String url, String json) {
    	// 创建Httpclient对象
    	CloseableHttpClient httpClient = HttpClients.createDefault();
    	CloseableHttpResponse response = null;
    	Map<String,Object> backMap=new HashMap<>();
    	String resultString = "";
    	try {
    		// 创建Http Post请求
    		HttpPost httpPost = new HttpPost(url);
    		// 创建请求内容
    		StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
    		httpPost.setEntity(entity);
    		// 执行http请求
    		response = httpClient.execute(httpPost);
    		int code = response.getStatusLine().getStatusCode();
            if(code == 200){    //请求成功
            	Header header=response.getEntity().getContentType();
            	System.out.println(header.toString());
            	System.out.println(header.getName().toString()); //这是获取key
            	System.out.println(header.getValue().toString()); //这是获取value
            	String headerStr=header.toString();
            	if(headerStr.indexOf("application/json")!=-1) {
            		resultString = EntityUtils.toString(response.getEntity(), "utf-8");
            		backMap.put("type", 201);
            		backMap.put("data", resultString);
            	}
            	else if(headerStr.indexOf("image/jpeg")!=-1) {
            		ByteArrayOutputStream bos = new ByteArrayOutputStream();
            		response.getEntity().writeTo(bos);
            		ByteArrayInputStream swapInputStream = new ByteArrayInputStream(bos.toByteArray());
            		backMap.put("type", 202);
            		backMap.put("data", swapInputStream);
            	}
            }
    	} catch (Exception e) {
    		backMap.put("type", 500);
    		e.printStackTrace();
    	} finally {
    		try {
    			response.close();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    	}
    	return backMap;
    }
}